Best Iodine Selenium Supplements of 2025

Elisa Drew Avatar
Elisa Drew
Last Updated: Jan 6, 2025

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Iodine Selenium supplements are a combination of two essential minerals that are crucial for maintaining healthy thyroid function and overall well-being. Iodine helps to regulate the production of thyroid hormones, while selenium acts as a powerful antioxidant that supports immune function and protects against oxidative damage. These supplements are particularly beneficial for individuals with thyroid disorders, as well as those who are deficient in these minerals due to dietary restrictions or environmental factors. With regular use, iodine selenium supplements can help to improve energy levels, support healthy metabolism, and promote optimal health and wellness.

At a Glance: Our Top Picks

NUTRAHARMONY Thyroid Support Capsules Cover #TOP 1
NUTRAHARMONY Thyroid Support Capsules
ftb score rating icon 9.8
Ioselen Thyroid Support Supplement Cover #TOP 2
Ioselen Thyroid Support Supplement
ftb score rating icon 9.7
Kelp with Natural Selenium Iodine Cover #TOP 3
Kelp with Natural Selenium Iodine
ftb score rating icon 9.5

Top 5 Iodine Selenium Supplements

NUTRAHARMONY Thyroid Support Capsules

Green
NUTRAHARMONY Thyroid Support Capsules Cover
Thyroid Support for Women - Selenium 200 mcg | Zinc & Iodine | L-Tyrosine | Magnesium | Adaptogen Herbs - 21-in-1 Antioxidant & Immune Support - Vegan, Non-GMO, Lab Tested - 60 Capsules, Made in USA

NUTRAHARMONY Thyroid Support offers a comprehensive blend of 21 essential nutrients designed to boost thyroid health and overall wellness. With 200 mcg of Selenium, Iodine, and Zinc, this supplement helps enhance your immune system and protects your cells from damage. Additionally, the inclusion of adaptogenic herbs like Ashwagandha and Holy Basil promotes healthy thyroid function for both men and women. Made in the USA under strict quality control, you can trust the purity and effectiveness of each capsule, ensuring you receive the best support for your health needs.

What We Like
Comprehensive 21-in-1 formula
Supports immune health
Contains adaptogenic herbs
Made in the USA
Third-party tested
#TOP 2

Ioselen Thyroid Support Supplement

Ibsa
Ioselen Thyroid Support Supplement Cover
Ioselen - Thyroid Support Supplement – 100 mcg Selenium, 100 mcg Iodine, 5mg BioPerine - 30 Soft-Gel Caps for Increased Bioavailability and Absorption - Gluten-Free, Lactose-Free, Sugar-Free, Non-GMO

Ioselen Thyroid Support is designed to promote healthy thyroid function through a blend of selenium and iodine. The supplement uses L-SeMet, a highly absorbable form of selenium, ensuring that your body can effectively utilize the nutrients. Additionally, it contains 5 mg of BioPerine, a black pepper extract that enhances nutrient absorption even further. This product comes in soft gel capsules made with advanced PEARLtec technology, which improves both absorption and tolerability. With Ioselen, you can enjoy a gluten-free, lactose-free, and non-GMO option that fits various dietary needs.

What We Like
Enhanced nutrient absorption
Supports thyroid health
Gluten-free and non-GMO
Easy-to-take soft gels
#TOP 3

Kelp with Natural Selenium Iodine

KELP
1 Count (Pack of 1)
Kelp with Natural Selenium Iodine Cover
Kelp with Natural Selenium Iodine

The Kelp with Natural Selenium Iodine is a supplement that contains 200mg of Kelp W/Selenomethionate in 90 capsules. The product is categorized as Selenium Supplements.

What We Like
Contains natural selenium and iodine.
Provides 200mg of Kelp W/Selenomethionate per 90 capsules.
Manufactured by Ecological Formulas / Cardiovascular Research.

Organic Selenium 200 mcg with Iodine and Silica

Earthier
SE60
Organic Selenium 200 mcg with Iodine and Silica Cover
Organic Selenium 200 mcg with Iodine and Silica All from Certified Organic Whole Foods - Two Month Supply

This Selenium Supplement contains 100% Certified Organic Whole-Food extracts from Mustard Seed Extract, Seaweed, and Bamboo Extract to provide standardised dosages of Selenium, Iodine and Silica. The formula is designed from real foods for real results, free of preservatives, excipients, magnesium stearate, silicon dioxide, and gluten. It is also vegan friendly.

What We Like
Certified organic whole-food extracts
Standardized dosages of Selenium, Iodine, and Silica
No preservatives, excipients, magnesium stearate, silicon dioxide, or gluten

Global Healing Selenium Supplement with Organic Ingredients (60 Capsules)

87-SSMW-H39I
Green
Global Healing Selenium Supplement with Organic Ingredients (60 Capsules) Cover
Global Healing Selenium 200mcg, Selenium Supplement with Organic Ingredients, Antioxidants for Thyroid Support and Immune Health, Non-GMO & Gluten-Free, Selenium 200 mcg for Men & Women (2 Oz)

Global Healing Selenium Supplement with Organic Ingredients is a powerful antioxidant that defends against free radicals to protect normal cell function, maintain cardiovascular health, and support a healthy thyroid and immune system. The organic and vegan capsules are made from certified organic mustard seeds for maximum absorption and are free from gluten, soy, dairy, GMOs, sugar, artificial flavors, synthetic dyes, and toxic fillers. Manufactured in the USA in a cGMP certified facility, the supplement comes with a 30-day guarantee.

What We Like
Powerful antioxidant for maximum thyroid support
Supports normal cardiovascular health and circulation
Helps balance hormones and strengthen the immune system
Organic and vegan capsules made from certified organic mustard seeds for maximum absorption
Manufactured in the USA in a cGMP certified facility with a 30-day guarantee
Buying Guide Image

Frequently Asked Questions (FAQs)

1. Should you take iodine with selenium?

INTRODUCTION. Adequate intakes of both iodine and selenium are required for optimal thyroid function (1–3). Iodine is an essential component of the thyroid hormones thyroxine (T4) and triiodothyronine (T3), and deficiency will impair synthesis of these hormones.

2. What is selenium and iodine good for?

Micronutrients, mostly iodine and selenium, are required for thyroid hormone synthesis and function. Iodine is an essential component of thyroid hormones and its deficiency is considered as the most common cause of preventable brain damage in the world.

3. Is iodine and selenium the same?

Iodine is the main component of thyroid hormones, namely, thyroxine (T4) and triiodothyronine (T3). Selenium is present in the thyroid gland in high concentrations, and this suggests that selenoproteins may contribute significantly to the integrity and functioning of the gland.

4. What foods are high in selenium and iodine?

Seaweed, such as kelp, nori, and wakame, are naturally rich in iodine--a trace element needed for normal thyroid function. Eat seaweed with sushi or get packaged seaweed snacks to toss in salads. Brazil nuts, macadamia nuts, and hazelnuts are excellent sources of selenium, which helps support healthy thyroid function.

Editor's Notes

During our iodine selenium supplement research, we found 24 iodine selenium supplement products and shortlisted 5 quality products. We collected and analyzed 30,368 customer reviews through our big data system to write the iodine selenium supplements list. We found that most customers choose iodine selenium supplements with an average price of $17.10.

The iodine selenium supplements are available for purchase. We have researched hundreds of brands and picked the top brands of iodine selenium supplements, including NUTRAHARMONY, Ibsa, Ecological Formulas, Earthier, Global Healing Center. The seller of top 1 product has received honest feedback from 4,664 consumers with an average rating of 4.9.

Written by
Elisa Drew Avatar

Elisa Drew is a really professional copywriter specializing in baby products with five years of experience working as a pediatrician once. She has published a series of baby books purchased by over thirty thousand people in the United States.